39874709 has 16 divisors (see below), whose sum is σ = 48460032. Its totient is φ = 32068608.

The previous prime is 39874693. The next prime is 39874729. The reversal of 39874709 is 90747893.

It is a cyclic number.

It is not a de Polignac number, because 39874709 - 2⁴ = 39874693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39874729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6197 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (3028752).

Almost surely, 2^39874709 is an apocalyptic number.

It is an amenable number.

39874709 is a deficient number, since it is larger than the sum of its proper divisors (8585323).

39874709 is a wasteful number, since it uses less digits than its factorization.

39874709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 39874709 is about 6314.6424285149. The cubic root of 39874709 is about 341.6377415397.

The spelling of 39874709 in words is "thirty-nine million, eight hundred seventy-four thousand, seven hundred nine".